Nuclear heating measurements by gamma and neutron thermometers

Research output: Contribution to report/book/conference proceedingsIn-proceedings paper

Standard

Nuclear heating measurements by gamma and neutron thermometers. / Van Nieuwenhove, Rudi; Vermeeren, Ludo.

Nuclear heating measurements by gamma and neutron thermometers. Unknown, 2019. p. 1-16 04-1178-RVN-LV.

Research output: Contribution to report/book/conference proceedingsIn-proceedings paper

Harvard

Van Nieuwenhove, R & Vermeeren, L 2019, Nuclear heating measurements by gamma and neutron thermometers. in Nuclear heating measurements by gamma and neutron thermometers., 04-1178-RVN-LV, Unknown, pp. 1-16.

APA

Van Nieuwenhove, R., & Vermeeren, L. (2019). Nuclear heating measurements by gamma and neutron thermometers. In Nuclear heating measurements by gamma and neutron thermometers (pp. 1-16). [04-1178-RVN-LV] Unknown.

Vancouver

Van Nieuwenhove R, Vermeeren L. Nuclear heating measurements by gamma and neutron thermometers. In Nuclear heating measurements by gamma and neutron thermometers. Unknown. 2019. p. 1-16. 04-1178-RVN-LV

Author

Van Nieuwenhove, Rudi ; Vermeeren, Ludo. / Nuclear heating measurements by gamma and neutron thermometers. Nuclear heating measurements by gamma and neutron thermometers. Unknown, 2019. pp. 1-16

Bibtex - Download

@inproceedings{3c82ff771e2e4117a8c0783cd4ea40c8,
title = "Nuclear heating measurements by gamma and neutron thermometers",
abstract = "A gamma thermometer suitable for very high gamma heating levels (up to 20 W/g) has been designed and modelled by means of detailed finite element calculations. Based on a sensitivity analysis, the predicted accuracy of this gamma thermometer is better than 5 {\%}. A novel miniaturized gamma thermometer is proposed in which a single thermocouple is used as the gamma absorption element, allowing a reduction of the sensor diameter down to 3 mm. Monte Carlo calculations (by MCNP) have been performed to assess the relative contribution of neutrons to the nuclear heating in a gamma thermometer. Calculations have been performed for gamma thermometers with an inner body made of various materials, such as stainless steel, tungsten, molybdenum and rhodium. By using gamma thermometers made of different materials, it will be possible to deduce the nuclear heating rates in these materials and also to separate out the neutron and gamma heating contributions. The Monte Carlo calculations show that nuclear heating of rhodium is mainly due to neutrons, converting the rhodium gamma thermometer effectively in a neutron thermometer. The sensitivities of the gamma thermometers with W, Mo or Rh as heated materials have been modelled by finite element calculations. It is found that both the Mo and the Rh based sensor have a very linear response up to a nuclear heating of 20 W/g.",
keywords = "Nuclear measurement, gamma-ray detectors",
author = "{Van Nieuwenhove}, Rudi and Ludo Vermeeren",
note = "Score=3",
year = "2019",
month = "7",
day = "9",
language = "English",
pages = "1--16",
booktitle = "Nuclear heating measurements by gamma and neutron thermometers",
publisher = "Unknown",

}

RIS - Download

TY - GEN

T1 - Nuclear heating measurements by gamma and neutron thermometers

AU - Van Nieuwenhove, Rudi

AU - Vermeeren, Ludo

N1 - Score=3

PY - 2019/7/9

Y1 - 2019/7/9

N2 - A gamma thermometer suitable for very high gamma heating levels (up to 20 W/g) has been designed and modelled by means of detailed finite element calculations. Based on a sensitivity analysis, the predicted accuracy of this gamma thermometer is better than 5 %. A novel miniaturized gamma thermometer is proposed in which a single thermocouple is used as the gamma absorption element, allowing a reduction of the sensor diameter down to 3 mm. Monte Carlo calculations (by MCNP) have been performed to assess the relative contribution of neutrons to the nuclear heating in a gamma thermometer. Calculations have been performed for gamma thermometers with an inner body made of various materials, such as stainless steel, tungsten, molybdenum and rhodium. By using gamma thermometers made of different materials, it will be possible to deduce the nuclear heating rates in these materials and also to separate out the neutron and gamma heating contributions. The Monte Carlo calculations show that nuclear heating of rhodium is mainly due to neutrons, converting the rhodium gamma thermometer effectively in a neutron thermometer. The sensitivities of the gamma thermometers with W, Mo or Rh as heated materials have been modelled by finite element calculations. It is found that both the Mo and the Rh based sensor have a very linear response up to a nuclear heating of 20 W/g.

AB - A gamma thermometer suitable for very high gamma heating levels (up to 20 W/g) has been designed and modelled by means of detailed finite element calculations. Based on a sensitivity analysis, the predicted accuracy of this gamma thermometer is better than 5 %. A novel miniaturized gamma thermometer is proposed in which a single thermocouple is used as the gamma absorption element, allowing a reduction of the sensor diameter down to 3 mm. Monte Carlo calculations (by MCNP) have been performed to assess the relative contribution of neutrons to the nuclear heating in a gamma thermometer. Calculations have been performed for gamma thermometers with an inner body made of various materials, such as stainless steel, tungsten, molybdenum and rhodium. By using gamma thermometers made of different materials, it will be possible to deduce the nuclear heating rates in these materials and also to separate out the neutron and gamma heating contributions. The Monte Carlo calculations show that nuclear heating of rhodium is mainly due to neutrons, converting the rhodium gamma thermometer effectively in a neutron thermometer. The sensitivities of the gamma thermometers with W, Mo or Rh as heated materials have been modelled by finite element calculations. It is found that both the Mo and the Rh based sensor have a very linear response up to a nuclear heating of 20 W/g.

KW - Nuclear measurement

KW - gamma-ray detectors

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/36534045

M3 - In-proceedings paper

SP - 1

EP - 16

BT - Nuclear heating measurements by gamma and neutron thermometers

PB - Unknown

ER -

ID: 5850901